/*
 * Copyright (c) 2024 Oracle and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.helidon.service.registry;

import java.util.Objects;
import java.util.Set;

import io.helidon.common.types.ResolvedType;

/**
 * Takes care of a single service descriptor.
 *
 * @param <T> type of the provided service
 */
class ServiceProvider<T> {
    private final ServiceDescriptor<T> descriptor;

    private final ActivationRequest activationRequest;
    private final InterceptionMetadata interceptionMetadata;
    private final Contracts.ContractLookup contracts;

    ServiceProvider(CoreServiceRegistry serviceRegistry,
                    ServiceDescriptor<T> descriptor) {

        Objects.requireNonNull(serviceRegistry);
        Objects.requireNonNull(descriptor);

        this.interceptionMetadata = serviceRegistry.interceptionMetadata();
        this.activationRequest = serviceRegistry.activationRequest();
        this.descriptor = descriptor;

        this.contracts = Contracts.create(descriptor);
    }

    @Override
    public String toString() {
        return "ServiceProvider for " + descriptor.serviceType().fqName();
    }

    ServiceDescriptor<T> descriptor() {
        return descriptor;
    }

    InterceptionMetadata interceptionMetadata() {
        return interceptionMetadata;
    }

    Set<ResolvedType> contracts(Lookup lookup) {
        return contracts.contracts(lookup);
    }

    ActivationRequest activationRequest() {
        return activationRequest;
    }
}
